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[原创]Centos7 下的ifconfig和netstat命令

2016-05-24

扩表空大小,需要考虑系统文件大小的限制吗?

Centos7 下的ifconfig和netstat命令

Centos6换过来后感觉到不少细微的变化,CentOS 7默认没有ifconfig和netstat两个命令.

ifconfig其实使用ip addr命令可以代替,在cenots6下的ss命令可以代替netstat,但是现在的ss和以前的完全是两样 ,还是得装上才行方便查看端口占用和tcp链接攻击等等。

把net-tools包装上就好了

yum install net-tools

如下:

[root@chefclient ~]# yum install net-tools
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.tuna.tsinghua.edu.cn
 * extras: mirrors.tuna.tsinghua.edu.cn
 * updates: centos.ustc.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================
 Package                            Arch                            Version                                              Repository                     Size
=============================================================================================================================================================
Installing:
 net-tools                          x86_64                          2.0-0.17.20131004git.el7                             base                          304 k

Transaction Summary
=============================================================================================================================================================
Install  1 Package

Total download size: 304 k
Installed size: 917 k
Is this ok [y/d/N]: Y
Downloading packages:
net-tools-2.0-0.17.20131004git.el7.x86_64.rpm                                                                                         | 304 kB  00:00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : net-tools-2.0-0.17.20131004git.el7.x86_64                                                                                                 1/1 
  Verifying  : net-tools-2.0-0.17.20131004git.el7.x86_64                                                                                                 1/1 

Installed:
  net-tools.x86_64 0:2.0-0.17.20131004git.el7                                                                                                                

Complete!
[root@chefclient ~]# 
[root@chefclient ~]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      831/sshd            
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1948/master         
tcp        0      0 192.168.122.136:47321   166.111.206.63:80       TIME_WAIT   -                   
tcp        0      0 192.168.122.136:55083   202.118.1.64:80         TIME_WAIT   -                   
tcp        0      0 192.168.122.136:22      192.168.122.1:45917     ESTABLISHED 8798/sshd: root@pts 
tcp6       0      0 :::80                   :::*                    LISTEN      832/httpd           
tcp6       0      0 :::22                   :::*                    LISTEN      831/sshd            
tcp6       0      0 ::1:25                  :::*                    LISTEN      1948/master         
[root@chefclient ~]# 


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